Stephanie Chasteen speaks with Zan Stine, a graduate student in the Earth and Planetary Sciences Department at the University of California at Berkeley, at the annual American Geophysical Union meeting. Mr. Stine tells us about his search for the reasons why summer is coming earlier than it did in the past.

Join us as we chat with Chris Mooney, Washington correspondent for Seed Magazine and author of Storm World: Hurricanes, Politics, and the Battle Over Global Warming and The Republican War on Science. His blog can be found at http://scienceblogs.com/intersection.

Join Mary Miller in conversation with Mark Serreze, Senior Research Scientist at the National Snow and Ice Data Center, as they discuss recent dramatic decreases in Arctic sea ice and what that means for global climate stability.

Tom Crawford and Jeff McMahon show us a day in the life of a South Pole scientist, then talk about what the telescope will be searching for: dark matter, galaxy clusters, and evidence of the universe expanding.

Join Exploratorium physicists Paul Doherty and Stephanie Chasteen as they examine the past, present, and future of climate change. In this show, Paul and Stephanie discuss the future of our climate. Learn more about the oceans, global warming, feedback effects, glacial ice and sea ice, and some things you can to do help.

Webcasts made possible through the generosity of the Gordon and Betty Moore Foundation, the Jim Clark Endowment for Internet Education, the McBean Family Foundation.

Bandwidth and infrastructure support for connectivity to the California Research and Education Network and to other Internet2-connected networks provided by the Corporation for Educational Networks Initiatives in California (CENIC).